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ENGINE ADJUSTMENTS
NOTE: WESTERBEKE recommends that the following engine adjust-
VALVE CLEARANCE
ments be performed
~-a
competent engine mechanic.
It
is routine mainterni.nce to adjust the valve clearance after
the first
fifty
hours of operation. Valve clearance adjustment
must be performed when the engine is cool and the piston
must
be
the top dead center of the compression stroke.
Perform the following adjustment steps:
FLYWHEEL COVER
BOLTS
1.' Remove the fuel pump and fuel filter from the cylinder
head cover. This assembly can
be
set aside without
removing the hoses. Disconnect the two ignition wires.
2. Remove the cylinder head cover.
FLYWHEEL
NOTE:
The governor sensor (mag pick-up) wires can be
disconnected at the side of the control panel.
4. Tum the driven gear and align the "I and O" mark on the
driven pulley with the " V" mark on the cylinder head.
EXHAUST
SIDE
FEELER GAUGE
5. Adjust the intake and exhaust valve clearance for
rYlitider
# i.
a. Loosen the lock nut.
INTAKE.
SIDE
b. Insert a·feeler gauge between the valve end and the
adjusting screw.
c. Set the valve clearance by the adjusting screw.
~ALVE
CLEARANCE:
INTAKE: 0.13 - 0.17mm (0.005 • 0.007in)
E EXHAUST: 0.18 - 0.22mm (0.007 - 0.0091n)
d. Tighten the lock nut.
e. Again, check the valve clearance.
6. Tum the driven gear and align the "2 and O" mark ori the
driven pulley with the " V" mark on the cylinder head.
7. Adjust the intake and exhaust valve clearance fot cylinder
#2 using the same sequence.
NOTE:
When loosening and tightening the lock ri.'ut, hold
the adjusting screw ·with a valve clearance driver to pre
vent it from moving:_
'
VALVE
CLEARANCE
DRIVER
8. Install the cylinder head cover'. Apply sealant
to
the inside
rim of the cover as indicated
by
the shaded
area
of the
drawing.
·
·
· · · ·
9. Install the flywheel cover and re-attach the sensor Wires
BOLTTORQUE:
.
.
. . .. . .
•
8 - 10 Nm (0.8 -1.0 kg-m) 5.8 - 7 .2 lb-ft
BACKSIDE
SEAL THIS AREA
WITH LOCTltE
OJJl=ii===l~::;;::!!;::ttlc
Engines & Generators
BLACK
SIL/CONE':""..~-&+-41---11-1.))
28
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Table of Contents
Troubleshooting
